Make every assumption visible.

Model a user-defined solar project scenario with installed cost, annual yield, energy value, O&M, degradation and discount rate—without claiming current supplier pricing.

Project inputs

Defaults are examples, not recommendations. Replace them with traceable project assumptions.

Nameplate DC capacity.
Enter your own dated project assumption.
Use a project-specific energy model when available.
Tariff, PPA value or avoided retail cost.
First-year operating cost assumption.
Annual nominal increase.
Applied to energy after year one.
Nominal project discount rate.
Scenario only; not a supplier quote.
Whole-year analysis horizon.

Screening result

Updated from the inputs at left.

Preliminary decision support only. Confirm inputs, governing standards and final conclusions with the responsible qualified professional before design, procurement or construction.

Method and assumptions

Year-one energy is capacity multiplied by entered specific yield. Energy declines by the entered degradation rate; O&M escalates from its first-year percentage of CAPEX. NPV discounts annual net cash flow. LCOE divides discounted CAPEX plus O&M by discounted energy.

  • All monetary values are nominal USD.
  • Simple payback is undiscounted.
  • The mounting budget is only a selected share of total CAPEX.